Parallelised referential constraints creation

 Hi,

I'm running an Oracle 11.1 DB. I need to import referential constraints into some of the table, but the import takes 10 hours to complete. I have 32 CPUs in the server.

I come across a note saying that i could parallelized the foreign key constraints creation and validation by alter the table degree to higher value e.g 12.

I just want to clarify if this is really help? any other thing that i need to do other than just issue alter table (tablename) parallel 12;?

Appreciate of any advise given.

Thanks